Global Patent Index - EP 1497341 A1

EP 1497341 A1 20050119 - PREPARATION OF HOMO-, CO- AND TERPOLYMERS OF SUBSTITUTED STYRENES

Title (en)

PREPARATION OF HOMO-, CO- AND TERPOLYMERS OF SUBSTITUTED STYRENES

Title (de)

HERSTELLUNG VON HOMOPOLYMEREN, COPOLYMEREN UND TERPOLYMEREN AUS SUBSTITUIERTEN STYROLEN

Title (fr)

PREPARATION D'HOMOPOLYMERES, DE COPOLYMERES ET DE TERPOLYMERES DE STYRENES SUBSTITUES

Publication

EP 1497341 A1 20050119 (EN)

Application

EP 03719712 A 20030410

Priority

  • US 0311260 W 20030410
  • US 12671902 A 20020419

Abstract (en)

[origin: US2002156199A1] A novel one-pot cost efficient process for the preparation of homo-, co- and terpolymers of p-hydroxystyrene or substituted p-hydroxystyrene and alkyl acrylates. The process involves polymerization of esters of p-hydroxystyrene (or its substituted analogs), alkyl acrylate monomers and/or one or more of ethylenically unsaturated monomers in an alcohol solvent in the presence of a free radical initiator. The reaction mixture containing the so formed polymer is subjected to transesterification conditions using a catalytic amount of catalyst to result in co- and/or terpolymers of p-hydroxystyrene without cleavage of the alkyl ester in the acrylate repeat unit, and then removing the catalyst from the system. Preferred embodiments include homopolymers of p-hydroxystyrene, copolymer of p-hydroxystyrene and tert-butyl acrylate and terpolymer of p-hydroxystyrene, tert-butyl acrylate and styrene. These polymers have a wide variety of applications including as photoresists in microelectronics industry.

IPC 1-7

C08F 8/00; C08F 6/02; C08F 12/24

IPC 8 full level

G03F 7/039 (2006.01); C08F 6/00 (2006.01); C08F 6/02 (2006.01); C08F 6/04 (2006.01); C08F 8/00 (2006.01); C08F 8/12 (2006.01); C08F 8/14 (2006.01); C08F 212/14 (2006.01); G03F 7/004 (2006.01)

CPC (source: EP KR)

C08F 6/02 (2013.01 - EP); C08F 6/04 (2013.01 - EP); C08F 8/00 (2013.01 - KR); C08F 8/14 (2013.01 - EP); C08F 12/24 (2013.01 - KR); C08F 216/02 (2013.01 - KR); G03F 7/0045 (2013.01 - EP); G03F 7/039 (2013.01 - EP); C08F 2800/10 (2013.01 - EP); C08F 2800/20 (2013.01 - EP)

C-Set (source: EP)

  1. C08F 6/02 + C08L 25/18
  2. C08F 6/04 + C08L 25/18
  3. C08F 6/02 + C08L 25/00
  4. C08F 8/14 + C08F 212/24

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

DOCDB simple family (publication)

US 2002156199 A1 20021024; US 6759483 B2 20040706; AR 039431 A1 20050216; AT 433466 T 20090615; AU 2003223575 A1 20031103; CA 2482901 A1 20031030; CN 1293105 C 20070103; CN 1585782 A 20050223; DE 60327928 D1 20090723; EP 1497341 A1 20050119; EP 1497341 B1 20090610; HK 1071151 A1 20050708; JP 2005523352 A 20050804; JP 4343707 B2 20091014; KR 20050007314 A 20050117; TW 200408654 A 20040601; TW I241309 B 20051011; WO 03089482 A1 20031030

DOCDB simple family (application)

US 12671902 A 20020419; AR P030101337 A 20030416; AT 03719712 T 20030410; AU 2003223575 A 20030410; CA 2482901 A 20030410; CN 03801453 A 20030410; DE 60327928 T 20030410; EP 03719712 A 20030410; HK 05103924 A 20050510; JP 2003586201 A 20030410; KR 20047016750 A 20030410; TW 92108932 A 20030417; US 0311260 W 20030410